Reference : The EBLM Project I-Physical and orbital parameters, including spin-orbit angles, of t...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/135087
The EBLM Project I-Physical and orbital parameters, including spin-orbit angles, of two low-mass eclipsing binaries on opposite sides of the Brown Dwarf limit
English
Triaud, Amaury H. M. J. [> >]
Hebb, Leslie [> >]
Anderson, David R. [> >]
Cargile, Phill [> >]
Collier Cameron, Andrew [> >]
Doyle, Amanda P. [> >]
Faedi, Francesca [> >]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Gomez Maqueo Chew, Yilen [> >]
Hellier, Coel [> >]
Jehin, Emmanuel [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Maxted, Pierre [> >]
Naef, Dominique [> >]
Pepe, Francesco [> >]
Pollacco, Don [> >]
Queloz, Didier [> >]
Ségransan, Damien [> >]
Smalley, Barry [> >]
Stassun, Keivan [> >]
Udry, Stéphane [> >]
West, Richard G. [> >]
1-Jan-2013
Astronomy and Astrophysics
EDP Sciences
549
18
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] Astrophysics - Solar and Stellar Astrophysics ; Astrophysics - Earth and Planetary Astrophysics
[en] This paper introduces a series of papers aiming to study the dozens of low mass eclipsing binaries (EBLM), with F, G, K primaries, that have been discovered in the course of the WASP survey. Our objects are mostly single-line binaries whose eclipses have been detected by WASP and were initially followed up as potential planetary transit candidates. These have bright primaries, which facilitates spectroscopic observations during transit and allows the study of the spin-orbit distribution of F, G, K+M eclipsing binaries through the Rossiter-McLaughlin effect. Here we report on the spin-orbit angle of WASP-30b, a transiting brown dwarf, and improve its orbital parameters. We also present the mass, radius, spin-orbit angle and orbital parameters of a new eclipsing binary, J1219-39b (1SWAPJ121921.03-395125.6, TYC 7760-484-1), which, with a mass of 95 +/- 2 Mjup, is close to the limit between brown dwarfs and stars. We find that both objects orbit in planes that appear aligned with their primaries' equatorial planes. Neither primaries are synchronous. J1219-39b has a modestly eccentric orbit and is in agreement with the theoretical mass--radius relationship, whereas WASP-30b lies above it.
http://hdl.handle.net/2268/135087
http://adsabs.harvard.edu/abs/2012arXiv1208.4940T
12 pages, 7 figures, data in appendices, A&A

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